[Elecraft] Fwd: Fw: It's almost Christmas. Have you gotten your 15% off yet!

[James Bennett]

I’ve got a Bioenno Power BLF-1212WS (LiFEPo4) sitting here on my desk, being charged by their supplied 117v charger, model FY1502000 switching power supply. It makes zero hash or crud on my KX3, K3, or SoftRock Ensemble RXTX (40,30, 20 meter version). No ferrite donuts wound on my leads. What power supply are you using? 


> On   Monday, Dec 21, 2015, at  Monday, 1:54 PM, Jim Sheldon <w0eb at cox.net> wrote:
> 
> Yes.  Also, their charger has a common mode choke, ala computer cables on it.  Unknown mix, but it's next to useless.  I put a multi turn choke of 31 mix on the output of the charger.  No luck.  The radiation is mostly out of the case and coupled to the AC cord.  Chokes there didn't do much either.  I even made sure the outlet it was plugged into was on the opposite phase from the radio's DC supply.  Ran the KX3 on internal batteries while the LiFePo battery was being charged and the RFI was still over S7.  Totally unacceptable IMO.
> 
> Jim
> 
> Sent from my iPad
> 
>> On Dec 21, 2015, at 3:15 PM, James Bennett <w6jhb at me.com> wrote:
>> 
>> Has anyone experiencing these RFI problems tried passing the power cable through a large mix 31 donut to see if the noise is eliminated? Worth a shot…
>> 
>> Jim / W6JHB
>> 
>> 
>>> On   Monday, Dec 21, 2015, at  Monday, 1:00 PM, Marc Veeneman <mhvnmn at gmail.com> wrote:
>>> 
>>> Which one?  I didn't like the EMI from the 10 amp model but could live with it if absolutely necessary.
>>> 
>>> I've been talking to them about the problem hams have with noise and we might convince them to sell quieter LiFePO4 chargers.
>>> -- 
>>> Marc.  SDG
>>> 
>>>> On Dec 21, 2015, at 3:51 PM, Jim Sheldon <w0eb at cox.net> wrote:
>>>> 
>>>> Unfortunately, my experience with Bioenno's chargers is that they are EXTREMELY RFI noisy.  In the same house with my KX3 the  noise was over S9!
>>>> 
>>>> Sent from my iPad
>>>> 
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to w6jhb at me.com
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to w0eb at cox.net